.nav{
    width: 1300px;
    margin: 0 auto;
    margin-top:2px;
    height: 66px;
    position: relative;
    display: flex;
    justify-content: space-between;
}
.logo{
    display: inline-block;
    min-width: 80px;
    max-width: 168px;
    overflow: hidden;
    margin-right: 10px;
    margin-top: 5px;
    vertical-align: top;
}
.logo img{
    height: 60px!important;
}
.nav_ul{
    height: 66px;
    width: 768px;
    display: inline-flex;
    justify-content: space-between;
}
.nav_ul a{
    height: 66px;
    text-align: center;
    min-width: 94px;
    cursor: pointer;
    line-height: 66px;
    font-size: 16px;
    padding: 0 12px;
    color: #333;
    box-sizing: border-box;
}

.nav-right{
    width: 444px;
    height: 66px;
    text-align: right;
    display: flex;
    justify-content: space-between;
}
.search_box{
    width: 200px;
    vertical-align: top;
    height: 40px;
    margin: 13px 0 0;
    position: relative;
}
.search_box form{
    width: 100%;
    border: none;
}
.search_box form .search_btn{
    position: absolute;
    cursor: pointer;
    height: 32px;
    line-height: 32px;
    background: #fff;
    border: 0;
    left: 5px;
    top: 2px;
    background: none;
    font-size: #333;
    width: 35px;
    font-size: 14px;
    outline: none;
}
.search_box form .search_input{
    height: 40px;
    line-height: 40px;
    font-size: 13px;
    color: #333;
    border: none;
    width: 100%;
    padding-left: 42px;
    padding-right: 12px;
    border-radius: 20px;
    background-color: #f7f8fa;
    box-sizing: border-box;
}

.nav-right .lr{
    width: 250px;
    display: flex;
    justify-content: space-evenly;
    font-size: 14px;
}
.nav-right .go_login{
    display: inline-block;
    line-height: 66px;
    margin: 0 6px;
    height: 66px;
    color: #333;
    vertical-align: top;
}
.nav-right .go_register{
    width: 68px;
    height: 30px;
    margin-right: 40px;
    margin-top: 18px;
    padding: 0;
    text-align: center;
    background: #2388ec;
    border-radius: 18px;
    color: #fff;
    line-height: 29px;
    cursor: pointer;
    box-sizing: border-box;

}
.nav-right .lr .userimg{
    width: 40px;
    height: 40px;
    background-color: #2388ec;
    margin: 0 auto;
    margin-top: 2px;
    border-radius: 50%;
}
.nav-right .lr img{
	width:100%;
}
.mouseenter{
    background-color: #4ca5ff;
    color: #fff;
}